<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-12-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001720592</issuerCik>
        <issuerName>Repay Holdings Corp</issuerName>
        <issuerTradingSymbol>RPAY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001868399</rptOwnerCik>
            <rptOwnerName>BT PARENT GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>FOUR EMBARCADERO CENTER</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3610</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001868378</rptOwnerCik>
            <rptOwnerName>BECKHAM PARENT, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>FOUR EMBARCADERO CENTER</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 3610</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock, par value $0.0001 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2021-12-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1129517</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8921785</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The reported shares were distributed by Beckham Parent, L.P. (&quot;Beckham Parent&quot;) to its limited partners (including Beckham Aggregator, L.P. (&quot;Beckham Aggregator&quot;)), pursuant to a pro rata distribution for no consideration that, for recipients, was exempt under Rule 16a-9.</footnote>
        <footnote id="F2">Of the reported shares: (i) 14,245 are owned of record by Beckham Parent and (ii) 8,907,540 are owned of record by Beckham Aggregator. BT Parent GP, LLC (&quot;BT Parent GP&quot;) is the general partner of Beckham Parent and Beckham Aggregator and as such may be deemed the beneficial owner of the shares reported herein. BT Parent GP has delegated investment decisions, including voting and dispositive power, with respect to the shares reported herein to Beckham Parent's and Beckham Aggregator's boards of managers, which are composed of six and three members, respectively, and who act by majority vote.</footnote>
        <footnote id="F3">Each of BT Parent GP, Beckham Parent and Beckham Aggregator as well as the members of the boards of managers disclaims beneficial ownership of the shares reported herein, and this report shall not be deemed an admission that such persons are the beneficial owners of such shares for the purpose of Section 16 or for any other purpose, except, in each case, to the extent of each such person's pecuniary interest therein.</footnote>
    </footnotes>

    <remarks>Beckham Aggregator has filed a separate Form 3 relating to the shares reported herein.</remarks>

    <ownerSignature>
        <signatureName>BT Parent GP, LLC, by /s/ Paul Marnoto, as Attorney-in-Fact</signatureName>
        <signatureDate>2021-12-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Beckham Parent, L.P., by BT Parent GP, LLC, by /s/ Paul Marnoto, as Attorney-in-Fact</signatureName>
        <signatureDate>2021-12-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
